Drinking mug



FIG. 1 is a front elevational view of a drinking mug showing our new design, the undisclosed rear elevational view is a mirror image thereof;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a sectional view thereof taken on line 3--3 of FIG. 2; and

FIG. 4 is a top plan view thereof. 

The ornamental design for a drinking mug, as shown and described. 